Bump DavidAnson/markdownlint-cli2-action in the github-deps group

Bumps the github-deps group with 1 update: [DavidAnson/markdownlint-cli2-action](https://github.com/davidanson/markdownlint-cli2-action).


Updates `DavidAnson/markdownlint-cli2-action` from 17 to 18
- [Release notes](https://github.com/davidanson/markdownlint-cli2-action/releases)
- [Commits](DavidAnson/markdownlint-cli2-action@v17...v18)

---
updated-dependencies:
- dependency-name: DavidAnson/markdownlint-cli2-action
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-deps
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yaml

@@ -31,7 +31,7 @@ jobs:
     name: "Lint Markdown"
     runs-on: ubuntu-latest
     steps:
-      - uses: DavidAnson/markdownlint-cli2-action@v17
+      - uses: DavidAnson/markdownlint-cli2-action@v18
         with:
           fix: true
           globs: '**/*.md'